U.S. patent number 10,829,014 [Application Number 16/424,867] was granted by the patent office on 2020-11-10 for vehicle seat.
This patent grant is currently assigned to Adient Engineering and IP GmbH. The grantee listed for this patent is Adient Engineering and IP GmbH. Invention is credited to Srinivasan Sivaraj.
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United States Patent |
10,829,014 |
Sivaraj |
November 10, 2020 |
Vehicle seat
Abstract
A vehicle seat (100, 200), transferable from a use position into
a non-use position, includes a seat part (120, 220), a backrest
(110, 210), and a base (140, 240). A front rocker (160, 260) is
articulated via a first joint (I) on the base/adapter (150, 250)
fixed to the base, and is articulated via a second joint (II) on
the seat part with limited displaceability. A rear rocker (170,
270) is articulated via a third joint (III) on the base/adapter
fixed to the base and is articulated via a fourth joint (IV) on the
seat part. A locking device (162, 262) locks the first joint, the
second joint or the fourth joint to lock the front rocker about the
first joint. A fifth joint (V) pivotably connects the backrest to
the rear rocker. A pivoting movement of the backrest about the
fifth joint can be locked.
Inventors: |
Sivaraj; Srinivasan
(Leverkusen, DE) |
Applicant: |
Name |
City |
State |
Country |
Type |
Adient Engineering and IP GmbH |
Burscheid |
N/A |
DE |
|
|
Assignee: |
Adient Engineering and IP GmbH
(Burscheid, DE)
|
Family
ID: |
1000005171683 |
Appl.
No.: |
16/424,867 |
Filed: |
May 29, 2019 |
Prior Publication Data
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Document
Identifier |
Publication Date |
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US 20190366886 A1 |
Dec 5, 2019 |
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Foreign Application Priority Data
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May 30, 2018 [DE] |
|
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10 2018 112 926 |
|
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
B60N
2/309 (20130101); B60N 2/3065 (20130101); B60N
2/757 (20180201); B60N 2/3009 (20130101) |
Current International
Class: |
B60N
2/02 (20060101); B60N 2/06 (20060101); B60N
2/04 (20060101); B60N 2/75 (20180101); B60N
2/36 (20060101); B60N 2/10 (20060101); B60N
2/12 (20060101); B60N 2/30 (20060101) |
Field of
Search: |
;297/334,378.14 |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
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10056024 |
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Jun 2002 |
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DE |
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10149858 |
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Oct 2003 |
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DE |
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102004005980 |
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Jun 2005 |
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DE |
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102006015560 |
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Aug 2007 |
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DE |
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102008050468 |
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Apr 2010 |
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DE |
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102010022615 |
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Dec 2011 |
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DE |
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102011101879 |
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Nov 2012 |
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DE |
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102008019527 |
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Jul 2013 |
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DE |
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102006028899 |
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Feb 2015 |
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DE |
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2898554 |
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Mar 2009 |
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FR |
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2968612 |
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Jun 2012 |
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FR |
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3025757 |
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Sep 2016 |
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FR |
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02/22391 |
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Mar 2002 |
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WO |
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2002092382 |
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Nov 2002 |
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WO |
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2018046433 |
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Mar 2018 |
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WO |
|
Primary Examiner: White; Rodney B
Attorney, Agent or Firm: Marshall & Melhorn, LLC
Claims
What is claimed is:
1. A vehicle seat transferable from at least one use position
suitable for passenger conveyance into at least one non-use
position, the vehicle seat comprising: a seat part; a backrest; a
base which is connectable to a vehicle; a front rocker pivotably
articulated at a first joint on the base or on an adapter fixedly
connected to the base, and pivotably articulated at a second joint
on the seat part with limited second joint displaceability; a rear
rocker pivotably articulated at a third joint on the base or on an
adapter fixedly connected to the base and pivotably articulated at
a fourth joint on the seat part; a locking device for locking a
pivoting movement of the front rocker about the first joint,
wherein: the backrest is pivotably connected to the rear rocker at
a fifth joint; and a pivoting movement of the backrest about the
fifth joint is lockable; wherein the third joint is comprised by a
geared fitting or the fifth joint is comprised by a geared fitting
or the third joint is comprised by a geared fitting and the fifth
joint is comprised by a geared fitting.
2. A vehicle seat according to claim 1, wherein the third joint is
comprised by a fitting.
3. A vehicle seat according to claim 2, wherein the fifth joint is
comprised by a fitting.
4. A vehicle seat according to claim 1, wherein the fifth joint is
comprised by a fitting.
5. A vehicle seat according to claim 4, further comprising a second
backrest selectively pivotable, together with the backrest about a
backrest pivot axis defined by the fifth joint, or selectively
pivotable separately from the backrest about the backrest pivot
axis defined by the fifth joint.
6. A vehicle seat according to claim 5, wherein the second backrest
is lockable to the backrest by a lock.
7. A vehicle seat according to claim 4, wherein the third joint is
comprised by a lockable latching fitting or the fifth joint
comprised by a lockable latching fitting or the third joint is
comprised by a lockable latching fitting and the fifth joint is
comprised by a lockable latching fitting.
8. A vehicle seat according to claim 1, wherein the third joint is
comprised by a lockable latching fitting or the fifth joint
comprised by a lockable latching fitting or the third joint is
comprised by a lockable latching fitting and the fifth joint is
comprised by a lockable latching fitting.
9. A vehicle seat according to claim 8, further comprising a second
backrest selectively pivotable, together with the backrest about a
backrest pivot axis defined by the fifth joint, or selectively
pivotable separately from the backrest about the backrest pivot
axis defined by the fifth joint.
10. A vehicle seat according to claim 9, wherein the second
backrest is lockable to the backrest by a lock.
11. A vehicle seat according to claim 1, wherein the vehicle seat
is transferable from the at least one use position into an ingress
position as the non-use position.
12. A vehicle seat according to claim 1, wherein the vehicle seat
is transferable from the at least one use position into a floor
position as the non-use position.
13. A vehicle seat according to claim 1, wherein the base comprises
a seat rail arrangement configured for a longitudinal adjustment of
the vehicle seat in a longitudinal direction.
14. A vehicle seat according to claim 1, further comprising a
second backrest selectively pivotable, together with the backrest
about a backrest pivot axis defined by the fifth joint, or
selectively pivotable separately from the backrest about the
backrest pivot axis defined by the fifth joint.
15. A vehicle seat according to claim 14, wherein the second
backrest is lockable to the backrest by a lock.
16. A vehicle seat according to claim 1, further comprising a
second backrest selectively pivotable, together with the backrest
about a backrest pivot axis defined by the fifth joint, or
selectively pivotable separately from the backrest about the
backrest pivot axis defined by the fifth joint.
17. A vehicle seat according to claim 16, wherein the second
backrest is lockable to the backrest by a lock.
18. A vehicle seat transferable from at least one use position
suitable for passenger conveyance into at least one non-use
position, the vehicle seat comprising: a seat part; a backrest; a
base which is connectable to a vehicle; a front rocker pivotably
articulated at a first joint on the base or on an adapter fixedly
connected to the base, and pivotably articulated at a second joint
on the seat part with limited second joint displaceability; a rear
rocker pivotably articulated at a third joint on the base or on an
adapter fixedly connected to the base and pivotably articulated at
a fourth joint on the seat part; a locking device for locking a
pivoting movement of the front rocker about the first joint,
wherein: the backrest is pivotably connected to the rear rocker at
a fifth joint; a pivoting movement of the backrest about the fifth
joint is lockable; and a second backrest selectively pivotable,
together with the backrest about a backrest pivot axis defined by
the fifth joint, or selectively pivotable separately from the
backrest about the backrest pivot axis defined by the fifth joint.
Description
CROSS REFERENCE TO RELATED APPLICATIONS
This application claims the benefit of priority under 35 U.S.C.
.sctn. 119 of German Application 10 2018 112 926.2, filed May 30,
2018, the entire contents of which are incorporated herein by
reference.
TECHNICAL FIELD
The invention relates to a vehicle seat, in particular motor
vehicle seat, which can be transferred from at least one use
position suitable for passenger conveyance into at least one
non-use position.
TECHNICAL BACKGROUND
DE 10 2008 050 468 B3 discloses a vehicle seat which can be
transferred from a use position suitable for passenger conveyance
into a pivoted-forward non-use position, comprising: a base; a
rocker which is articulated on a front foot; a seat cushion which
is articulated on the rocker and has, as structure, a seat cushion
carrier from which an arm projects at the rear, a joint being
arranged on the end of said arm; a link which is articulated on the
front foot; a rear foot which is articulated on the link and can be
releasably locked to the base; and a backrest which is articulated
on the rear foot by means of at least one lockable fitting so as to
be pivotable about a backrest pivot axis and which is adjustable in
its inclination relative to the rear foot, wherein the seat cushion
is articulated on the backrest by means of the joint so as to be
offset with respect to the backrest pivot axis.
WO 2002/092382 A1 discloses a vehicle seat which has a use position
and an ingress/egress position. The vehicle seat comprises a rising
supporting element which is suitable to be articulated on a vehicle
interior floor, a backrest which is articulated on the rising
supporting element, an upper element which is articulated on the
backrest, and a front leg which is articulated on the upper element
and is suitable to be articulated on the vehicle interior floor. An
ingress/egress mechanism is configured to fasten the rising
supporting element and the vehicle interior floor relative to one
another, wherein the seat can be brought into the ingress/egress
position by the ingress/egress mechanism being unlocked and the
seat being pivoted in a forward direction, wherein the backrest
remains fixed relative to the rising supporting element if the seat
is moved from the use position into the ingress/egress
position.
WO 2018/046433 A1 discloses a vehicle seat which can be transferred
from a use position suitable for passenger conveyance into a
non-use position, having a seat cushion with a seat cushion
carrier, a backrest, a base which can be connected to a vehicle, a
rocker which is pivotably connected by means of a first joint to
the base or to a component fixedly connected to the base, and is
pivotably connected by means of a second joint to the seat cushion
carrier of the seat cushion, a rear foot which is pivotably
connected by means of a third joint to the base or to a component
fixedly connected to the base, wherein a pivoting movement of the
rear foot about the third joint can be locked, and wherein the rear
foot is pivotably connected by means of a fourth joint to the
backrest, and a fifth joint which connects the backrest to the seat
cushion carrier, wherein at least one of the joints is a
fitting
SUMMARY
An object on which the invention is based is to improve a vehicle
seat of the type stated at the outset. In particular, the vehicle
seat is comprised by a vehicle seat with precisely one seating
position, but which is also structurally reconfigurable into a
vehicle seat with two seating positions using as many identical
parts as possible. It is intended thereby to be able to make
available a seat row with a 40% vehicle seat and a 60% vehicle
seat, wherein the two vehicle seat have as many identical parts as
possible and identical basic kinematics. In particular, it is
intended for the vehicle seat to be able to be configured in such a
way that such vehicle seat has two fully valid seating positions
with two backrests which can be folded independently of one another
and a one-part seat part (seat cushion). It is intended to be
possible to be able to fold one of the two backrests forwards in
order to increase the loading volume, and nevertheless to be able
to continue to use one of the two seating spaces for passenger
transport. In the case of the vehicle seats known from the prior
art stated at the outset, this is not possible since pivoting of
one of the backrests would automatically cause the entire seat part
to be lowered, with the result that the seat part would no longer
be suitable for passenger transport.
This object is achieved according to the invention by a vehicle
seat, in particular motor vehicle seat, which can be transferred
from at least one use position suitable for passenger conveyance
into at least one non-use position, having: a seat part, a
backrest, a base which can be connected to a vehicle, a front
rocker which is pivotably articulated by means of a first joint on
the base or on an adapter fixedly connected to the base, and is
pivotably articulated by means of a second joint on the seat part
with limit displaceability, a rear rocker which is pivotably
articulated by means of a third joint on the base or on an adapter
fixedly connected to the base, wherein the rear rocker is pivotably
articulated by means of a fourth joint on the seat part, a locking
device for locking the first joint or the second joint or the
fourth joint, in particular for locking the pivoting movement of
the front rocker about the first joint, and a fifth joint which
pivotably connects the backrest to the rear rocker, wherein a
pivoting movement of the backrest about the fifth joint can be
locked.
By virtue of the fact that the backrest is pivotably connected to
the rear rocker by means of the fifth joint, wherein a pivoting
movement of the backrest about the fifth joint can be locked, and
the rear rocker is pivotably articulated by means of a fourth joint
on the seat part, the vehicle seat can be selectively configured as
a vehicle seat with precisely one seating position or as a vehicle
seat with two fully valid seating positions having two backrests
which can be folded independently of one another and a one-part
seat part. Here, the claimed kinematics must be present only on one
seat side. The kinematics of the second seat side can be configured
in a modified manner, with, for example, it being possible for a
lockable fitting to be replaced by a non-lockable rotary joint.
The third joint (the articulated connection between the base or an
adapter fixedly connected to the base and the rear rocker) can be a
fitting. Since the third joint is a fitting, a cost-effective
vehicle seat is provided which has only few components. There is
additionally avoided a risk of injury when pivoting back the
vehicle seat from an ingress position into a use position. The rear
rocker has no further components, in particular no lock, which
could injure a passenger of a seat row arranged behind the vehicle
seat when pivoting back the rear rocker into the use position.
Alternatively, the third joint can be lockable by means of a lock,
in particular a rotary latch lock.
The fifth joint (the articulated connection between the rear rocker
and the backrest) can be a fitting. Since the fifth joint is a
fitting, a cost-effective vehicle seat can be provided which has
only few components. Alternatively, the fifth joint can be lockable
by means of a lock, in particular a rotary latch lock.
The third joint and/or the fifth joint can be a lockable latching
fitting or a geared fitting. A latching fitting has a first fitting
part and a second fitting part. The first fitting part and the
second fitting part are pivotable relative to one another in an
unlocked state of the latching fitting. The latching fitting can
have at least one bolt which is movably guided in one of the two
fitting parts between a locked state and an unlocked state and
which interacts in the locked state with a ring gear of the other
of the two fitting parts. A latching fitting is known from DE 10
2006 015 560 B3, for example. The corresponding publication US
2009/0085391 A1 is hereby incorporated by reference in its
entirety. A latching fitting is also referred to as a discontinuous
fitting.
In particular for the electrification of the vehicle seat according
to the invention, at least one fitting can be configured as a
geared fitting. A geared fitting is also referred to as a
continuous fitting or tumbling fitting. A geared fitting is known
from DE 10 2010 022 615 A1, for example. The corresponding
publication US 2013/0090204 A1 is hereby incorporated by reference
in its entirety. In combination with an electrical drive, a geared
fitting allows an electrically operated transfer between the use
position and the non-use position. A fitting configured as a geared
fitting can allow a rotary movement of the rear rocker with a
superimposed tumbling movement.
Since the joint configured as a fitting can be selectively a
latching fitting or geared fitting, a module is made available by
means of which both a manual vehicle seat and an electrically
driven vehicle seat can be created by selecting the fitting
type.
In addition, geared fittings can be used which do not have a
tumbling movement but a purely rotating output movement, as known
from DE 10 2004 005 980 B3, for example. In principle, the fitting
can also be based on other types of gear mechanism.
The vehicle seat can be able to be transferred from the at least
one use position into an ingress position as non-use position. The
first joint, the second joint, the third joint and the fourth joint
can form a first four joint arrangement for transferring the
vehicle seat from the at least one use position into the ingress
position. The vehicle seat can be able to be transferred from the
at least one use position into a floor position as non-use
position.
The base is preferably formed as a seat rail arrangement configured
to provide a longitudinal adjustment of the vehicle seat in and
counter to a longitudinal direction. As a result, the seat can be
brought into an ingress position in which it is displaced forwards
in the longitudinal direction with respect to the at least one use
position. This particularly facilitates access to a seat row
arranged behind the vehicle seat.
The vehicle seat can have a second backrest which is selectively
pivotable, together with the backrest or separately from the
backrest, about a backrest pivot axis defined by the fifth joint.
As a result, a vehicle seat having two seating positions can be
made available in which, while maintaining one of the two seating
positions, and to increase the loading volume of the vehicle, the
second backrest is pivotable into preferably a substantially
horizontal position.
The second backrest can be able to be locked to the backrest by
means of a lock. The lock can be a rotary latch lock. The rotary
latch lock can be fastened to the backrest and can lockingly
receive a counter-element fastened to the second backrest, in
particular a wire, a pin or a bow.
The invention is explained in more detail below with reference to
two advantageous exemplary embodiments illustrated in the figures.
However, the invention is not limited to these exemplary
embodiments. The various features of novelty which characterize the
invention are pointed out with particularity in the claims annexed
to and forming a part of this disclosure. For a better
understanding of the invention, its operating advantages and
specific objects attained by its uses, reference is made to the
accompanying drawings and descriptive matter in which preferred
embodiments of the invention are illustrated.
BRIEF DESCRIPTION OF THE DRAWINGS
In the drawings:
FIG. 1 is a perspective illustration of a 40%-60%-split seat row
having two vehicle seats formed according to the invention which
are arranged next to one another, wherein one of the two vehicle
seats has two backrest parts;
FIG. 2 is a further perspective illustration of the seat row from
FIG. 1, wherein a central backrest is folded down forwards;
FIG. 3 is a schematic side view of one of the two vehicle seats
according to the invention from FIG. 1 in a use position;
FIG. 4 is a schematic side view of the vehicle seat from FIG. 3 in
an intermediate position between the use position and an ingress
position;
FIG. 5 is a schematic side view of the vehicle seat from FIG. 3 in
the ingress position;
FIG. 6 is a schematic side view of the vehicle seat from FIG. 3 in
an intermediate position between the use position and a floor
position; and
FIG. 7 is a schematic side view of the vehicle seat from FIG. 3 in
the floor position.
DESCRIPTION OF PREFERRED EMBODIMENTS
Referring to the drawings, FIGS. 1 and 2 show a seat row 1 for a
vehicle, in particular motor vehicle, wherein a padding of the seat
row 1 that comprises foam parts and seat covers is not illustrated.
The seat row 1 is, for example, a central seat row of a vehicle,
for example of a van. The seat row 1 is split in a ratio of 40% to
60% and has two vehicle seats 100, 200. A vehicle seat 100
constitutes a first exemplary embodiment of a vehicle seat
according to the invention and the 40% part of the seat row 1 and
offers a seating position for precisely one person. In the present
case, the vehicle seat 100 provides the outer right seating
position of the seat row 1. The other vehicle seat 200 constitutes
a second exemplary embodiment of a vehicle seat according to the
invention and the 60% part of the seat row 1 and offers a
respective seating position for precisely two persons. In the
present case, the vehicle seat 200 provides the central seating
position and the outer left seating position of the seat row 1. The
vehicle seats 100, 200 are preferably configured completely
separately from one another. Each of the two vehicle seats 100, 200
is configured according to the invention.
The vehicle seat 100 with precisely one seating position can
selectively assume at least one use position (FIG. 3) suitable for
passenger conveyance, an ingress position (FIG. 5) or a floor
position (FIG. 7). The vehicle seat 200 having two seating
positions can also selectively assume at least one use position
suitable for passenger conveyance, an ingress position or a floor
position. In the ingress position, access for a person to a further
seat row arranged behind the vehicle seats 100, 200 is facilitated.
In the floor position, the vehicle seats 100, 200 each serve as a
loading floor of the vehicle.
The vehicle seats 100, 200 are described below using three spatial
directions extending perpendicular to one another. With the vehicle
seats 100, 200 installed in the vehicle, a longitudinal direction x
extends substantially horizontally and preferably parallel to a
vehicle longitudinal direction which corresponds to the usual
direction of travel of the vehicle. A transverse direction y
extending perpendicularly to the longitudinal direction x is also
oriented horizontally in the vehicle and extends parallel to a
vehicle transverse direction. A vertical direction z extends
perpendicularly to the longitudinal direction x and perpendicularly
to the transverse direction y. With the vehicle seats 100, 200
installed in the vehicle, the vertical direction z extends parallel
to the vehicle vertical axis.
The positional and directional indications used, such as, for
example, front, rear, top and bottom, refer to a viewing direction
of a person seated in one of the vehicle seats 100, 200 in a normal
sitting position, wherein the vehicle seat 100, 200, when installed
in the vehicle, is oriented in a use position suitable for
passenger conveyance with upright backrests 110, 210 and, as usual,
in the direction of travel. However, the vehicle seats 100, 200
according to the invention can also be installed in a different
orientation, for example transversely to the direction of
travel.
First of all, the vehicle seat 100 with precisely one seating
position is described below. The vehicle seat 100 has a backrest
110 and a seat part 120. The backrest 110 comprises a supporting
backrest structure and a backrest padding (not shown in the
figures) The term backrest 110 is to be understood as meaning the
entire assembly consisting of the backrest structure and the
backrest padding. Where components are described as being
articulated on the backrest 110, this is also to be understood as
meaning an articulation on the backrest structure of the backrest
110. The seat part 120 comprises a seat cushion carrier which
carries a seat part padding (not shown in the figures).
For the sake of simplicity, and where appropriate, only one vehicle
seat side of the substantially symmetrical vehicle seat 100 will be
described below, that is to say the components stated below, unless
described differently, are present doubly (preferably
mirror-symmetrically to one another). First of all, the vehicle
seat 100 is described in a specific use position illustrated in
FIG. 3, namely the design position, in which the backrest 110 is
inclined rearwards by, for example, 23.degree. with respect to the
vertical direction z. Where the use position is described in the
singular below, the description applies to all use positions, in
particular to the design position.
The seat cushion carrier of the seat part 120 has a respective side
part 122 on both seat sides. The two side parts 122 are connected
to one another in a front region of the seat part 120 by means of a
crossmember 124. The two side parts 122 and the crossmember 124
form a U-shaped seat cushion carrier.
A base 140 of the vehicle seat 100 can be connected to a body
structure of the vehicle. In the present case, the base 140 has a
first seat rail 142 which can be connected directly to the body
structure, and a second seat rail 144 which can be displaced
relative to the first in the longitudinal direction x. The two seat
rails 142 and 144 with a substantially U-shaped profile engage
mutually behind one another by way of their inwardly or outwardly
bent longitudinal edges and can be locked to one another by means
of a rail locking device known per se. The rail locking device can
be unlocked by the user of the vehicle seat 100 by means of an
unlocking bow known per se, for example.
An adapter 150, in the present case fixedly connected to the second
seat rail 144, is mounted on the base 140. Alternatively, the
adapter 150 can be formed in one piece with the second rail 144.
However, in a modification of the exemplary embodiment, the adapter
150 can also be releasably locked to the base 140. The side part
122 of the seat part 120 is articulated on the adapter 150 by means
of a front rocker 160, wherein the front rocker 160 has two ends
and a respective joint is provided in the region of these two ends,
of which a first joint I, in the present case a rotary joint, forms
the articulation of the front rocker 160 on the adapter 150. The
first joint I can be locked to the adapter 150 by means of a
locking device 162 known per se. The locking device 162 can be
constituted, in principle, by all known locking devices which are
suitable for locking a pivoting movement between two components.
For example, the locking device 162 may be a locking mechanism 1 as
shown in U.S. Pat. No. 7,188,906 B2, which is hereby incorporated
by reference in its entirety. The locking device 162 is therefore
only schematically illustrated in the figures. With the locking
device 162 unlocked, the front rocker 160 can be pivoted relative
to the base 140. With the locking device 162 locked, a pivoting of
the front rocker 160 relative to the base 140 is not possible. A
second joint II, in the present case a turning and sliding joint,
forms the articulation of the front rocker 160 on the side part
122, in the present case in a front end region of the side part
122. By virtue of a configuration of the second joint II as a
turning and sliding joint, the second joint II of the front rocker
160 allows a turning movement and additionally a sliding movement
(translation) with respect to the side part 122. In the present
case, the second joint II comprises a slotted guide 126 in the side
part 122 that is configured as an oblong hole, and a pin which is
connected to the front rocker 160 and which is guided with limited
displaceability in the slotted guide 126. The slotted guide 126
extends approximately parallel to the longitudinal direction x in
the use position of the vehicle seat 100.
Furthermore, a rear rocker 170 is arranged on the base 140 behind
the front rocker 160. The rear rocker 170 is connected to the rear
rocker 170 of the right vehicle seat side via a transverse
connection, in the present case a cross-tube 176. The rear rocker
170 is pivotably articulated on the base 140, in the present case
the adapter 150, by means of a third joint III, in the present case
a lockable rotary joint, configured as a lockable first fitting
172. As a result, a pivoting movement of the rear rocker 170 about
the third joint III can be locked. Thus, the rear rocker 170 is
connected by means of the third joint III in an articulated manner
to the adapter 150 and thus in an articulated manner to the base
140.
The side part 122 of the seat part 120 is articulated on the rear
rocker 170 by means of a fourth joint IV, in the present case a
rotary joint. The fourth joint IV is arranged in a rear end region
of the side part 122.
The backrest 110 is pivotably connected to the rear rocker 170 by
means of a fifth joint V configured as a lockable second fitting
174. In an unlocked state of the second fitting 174, the backrest
110 is pivotable relative to the rear rocker 170, to be precise
about a backrest pivot axis A extending parallel to the transverse
direction y. The backrest 110 is adjustable in its inclination by
means of the second fitting 174, with the result that a plurality
of use positions are defined. In a modification of the exemplary
embodiment, the fittings can be lockable in only one use
position.
The rear rocker 170 is boomerang-shaped. The third joint III is
arranged in a first end region of the rear rocker 170. The fifth
joint V is arranged in a second end region of the rear rocker 170.
The fourth joint IV is arranged between the third joint III and the
fifth joint V, offset with respect to a linear imaginary connection
line between the third joint III and the fifth joint V.
The joints I, II, III, IV, V described each allow a rotation about
in each case an axis of rotation extending parallel to the
transverse direction y. The joints I, II, III, IV, V are each
present on both seat sides. The two fifth joints V form the
backrest pivot axis A.
In the use position, in particular the design position, the first
joint I is situated, as viewed in the longitudinal direction x, in
front of the second joint II. A pin of the second joint II is
arranged in the front region of the slotted guide 126. The front
rocker 160 is oriented with a rearward inclination with respect to
the vertical direction z. The locking device 162 and the fittings
172, 174 are locked.
The vehicle seat 100 can be transferred from the use position
illustrated in FIG. 1 that is suitable for passenger conveyance
into an ingress position illustrated in FIG. 5. For this purpose,
the locking device 162 and the first fitting 172 forming the third
joint III are unlocked and the rear rocker 170 is pivoted forwards.
Here, the pin of the second joint II moves rearwards in the slotted
guide 126 relative to the side part 122. Pivoting the rear rocker
170 forwards also causes the backrest 110 articulated on the rear
rocker 170 to be pivoted forwards. Here, the second fitting 174
forming the fifth joint V remains locked, with the result that the
backrest 110 maintains its angular position relative to the rear
rocker 170.
FIG. 4 shows an intermediate position during the transfer from one
of the use positions into the ingress position. In the ingress
position, by comparison with the use positions, the vehicle seat
100 is moved forwards relative to the base 140. In the ingress
position, the first joint I is situated, as viewed in the
longitudinal direction x, behind the second joint II. The pin of
the second joint II is arranged in the rear region of the slotted
guide 126. The front rocker 160 is oriented with a forward
inclination with respect to the vertical direction z. For securing
the vehicle seat 100 in the ingress position, the locking device
162 and/or the first fitting 172 forming the third joint III can
preferably also be lockable in the ingress position.
In the ingress position, the vehicle seat 100 is preferably
additionally displaced forwards in the longitudinal direction x by
means of the seat rails 142, 144. This facilitates access to a
further seat row arranged behind the vehicle seat 100. The rail
locking device can be coupled, for example, by means of a cable
pull to the rear rocker 170 in such a way that, upon transfer from
the use position into the ingress position, the pivoting movement
of the rear rocker 170 automatically opens the rail locking
device.
In addition, the vehicle seat 100 can be transferred from the use
position into a floor position illustrated in FIG. 7 in which the
backrest 110 is arranged substantially horizontally and a rear side
of the backrest 110 can serve as an extended loading floor of a
vehicle. To transfer the vehicle seat 100 from the use position
into the floor position, the locking device 162 and the second
fitting 174 forming the fifth joint V are unlocked and the front
rocker 160 is pivoted back, whereas the backrest 110 is pivoted
forwards. Here, the pin of the second joint II moves rearwards in
the slotted guide 126 relative to the side part 122. The first
fitting 172 forming the third joint III remains locked upon
transfer into the floor position, with the result that the rear
rocker 170 maintains its angular position relative to the base
140.
FIG. 6 shows an intermediate position during the transfer from one
of the use positions into the floor position. In the floor
position, by comparison with the use positions, the seat part 120
is lowered at the front, with the result that the backrest 110 can
be pivoted forward into an approximately horizontal position. In
the floor position, the first joint I is situated, as viewed in the
longitudinal direction x, in front of the second joint II. The pin
of the second joint II is arranged in the rear region of the
slotted guide 126. By comparison with the use position, the front
rocker 160 has a greater rearward inclination with respect to the
vertical direction z. For securing the vehicle seat 100 in the
floor position, the locking device 162 and/or the second fitting
174 forming the fifth joint V can preferably also be lockable in
the floor position.
The vehicle seat 200 having two seating positions that is
illustrated in FIGS. 1 and 2 corresponds in terms of its structure
and its seat positions (use positions, ingress position and floor
position) to the vehicle seat 100 having one seating position,
unless described differently below. The description of the vehicle
seat 100 having one seating position is, unless described
differently below, thus also applicable to the vehicle seat 200
having two seating positions. Identical or identically acting
components have reference signs increased by the value one
hundred.
The vehicle seat 200 has a backrest 210 and a second backrest 212.
In the present case, the backrest 210 is a constituent part of the
outer left seating position of the seat row 1. In the present case,
the backrest 212 is a constituent part of the central seating
position of the seat row 1. A seat part 220 of the vehicle seat 200
corresponds in terms of its structure to the seat part 120 of the
vehicle seat 100 having one seating position. In particular, the
seat part 220 has two side parts 222 with a respective slotted
guide 226 and a crossmember 224. The vehicle seat 200 has a base
240 on both sides, each comprising a first seat rail 242 which can
be connected directly to the body structure, and a second seat rail
244 which is displaceable relative to the first in the longitudinal
direction x. In addition, just like the vehicle seat 100, the
vehicle seat 200 has, on both sides, an adapter 250, a front rocker
260, a locking device 262, a rear rocker 270, two fittings 272, 274
and a cross-tube 276.
The outer side of the vehicle seat 200 corresponds in terms of the
seat kinematics, in particular in terms of the joints I, II, III,
IV, V, to the above-described outer side of the vehicle seat 100.
The inner side of the vehicle seat 200 differs slightly therefrom
as described below. On the side facing the backrest 212, the
backrest 210 is attached to the cross-tube 276 by means of the two
fittings 274 forming the joints V and the backrest pivot axis A.
For this purpose, the cross-tube 276 has a bracket 278. On its side
facing the backrest 210, the central backrest 212 is articulated by
means of a rotary bearing on the bracket 278 so as to be pivotable
about the backrest pivot axis A. On its side facing away from the
backrest 210, the backrest 212 is articulated on the rear rocker
270 by means of a fifth joint V so as to be pivotable about the
backrest pivot axis A. The backrest 212 of the central seating
position can be connected to the backrest 210 of the outer seating
position by means of a rotary latch lock (not shown in the figures)
which is fastened eccentrically with respect to the backrest axis
of rotation A.
With the rotary latch lock unlocked, the central backrest 212 can
be pivoted about the backrest pivot axis A independently of the
outer backrest 210. Here, the fittings 272, 274 and the locking
device 262 remain locked. The backrest pivot axis A remains fixed
in position relative to the base 240.
With the rotary latch lock locked, the coupled-together backrests
210, 212 move during a transfer from the use position into the
ingress position and during a transfer from the use position into
the floor position in an analogous manner to the above-described
backrest 110 of the vehicle seat 100 having one seating position.
The kinematics, in particular the positions of the joints I, II,
III, IV, V, corresponds to the kinematics of the vehicle seat 100
having one seating position.
The features disclosed in the above description, the claims and the
drawings may be important both individually and in combination for
the purpose of realizing the invention in its various
configurations.
Although the invention has been described in detail in the drawings
and the description above, what has been said and illustrated
should be understood as being illustrative and exemplary and not
restrictive. In particular, the choice of the proportions of the
individual elements illustrated in the drawings should not be
interpreted as necessary or limiting. Furthermore, the invention is
in particular not limited to the exemplary embodiments explained.
Further variants of the invention and the implementation thereof
are apparent to a person skilled in the art from the above
disclosure, the figures and the claims.
While specific embodiments of the invention have been shown and
described in detail to illustrate the application of the principles
of the invention, it will be understood that the invention may be
embodied otherwise without departing from such principles.
TABLE-US-00001 APPENDIX List of reference designations: 1 Seat row
100, 200 Vehicle seat 110, 210 Backrest 120, 220 Seat part 122, 222
Side part 124, 224 Crossmember 126, 226 Slotted guide 140, 240 Base
142, 242 First seat rail 144, 244 Second seat rail 150, 250 Adapter
160, 260 Front rocker 162, 262 Locking device 170, 270 Rear rocker
172, 272 First fitting 174, 274 Second fitting 176, 276 Cross-tube
212 Backrest 278 Bracket I First joint II Second joint III Third
joint IV Fourth joint V Fifth joint A Backrest pivot axis x
Longitudinal direction y Transverse direction z Vertical
direction
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